Taking the NLN RN Pre-Entrance exam in 2 weeks

ok i am taking the NLN's RN pre-entrance exam May 26th 2009 and i am very nervous. I actually took the HESI out in AZ and they provided you with a calculator on the computer. (oh by the way im in staten island NY) i am trying to find out how hard this exam is and if im allowed a calculator or if they provide you with one. cause honestly i am horrible at math....oh and is the vocabulary very intense?